Glossary
Glossary
Every technical term used here, defined.
- Terms
- 1,702
- With an illustration
- 23
- Cross-references
- 66
- Used in profiles
- 1,807
54 terms beginning with H · showing 41–54
hydrophobic
Lacking an affinity for water.
hydroponics
Method of growing plants in the absence of soil and using a nutrient solution. The plants may be rooted directly into the solution or in an inert medium such as rockwool or gravel.
hyoid
Of, relating to or being the hyoid bone.
hyoid arch
Either of the second pair of pharyngeal or gill arches. Supports part of the tongue and the branchiostegal rays.
hyoid bone
Horseshoe-shaped bone that supports the tongue and associated structures.
hyomandibular
Segment of the hyoid arch connecting the lower jaw to the skull.
Used in 16 profiles
hypaxial
Used in reference to any structure located below the axis of the skeleton.
hyperhaline
Extremely salty or able to withstand extreme concentrations of salt.
hypersaline
Used in reference to bodies of water with a higher salinity than sea water.
Used in 11 profiles
hypogean
Growing or existing below the surface of the ground.
Used in 31 profiles
hypoxia
Oxygen deficiency in blood or tissue.
Used in 16 profiles
hypural
Of, relating to, forming or being one of the partially-fused hemal spines that support the caudal fin rays in most teleosts.
Used in 19 profiles
hypural bones
Series of bones to which the caudal fin rays are attached.
hypurapophysis
Paired, bony lateral extensions off the parhypural. Also known as 'parhypurapophysis'.
Used in 8 profiles